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Online Encyclopedia of Integers (OEIS) Sequence A256275

Regular Member

Online Encyclopedia of Integers (OEIS) Sequence A256275

I've just had Sequence A256275 accepted for inclusion in the Online Encyclopedia of Integer Sequences (OEIS) - see https://oeis.org/A256275.  The OEIS is the go-to place for checking integer sequences.

A256275 Decimal equivalent of the binary string generated by the negation of the n x n identity matrix.

0, 6, 238, 31710, 16510910, 34089189246, 280371153272574, 9205322385119247870, 1207744073945406663293950, 633515663914742881158342637566, 1328903397983747395279166325955489790, 11149011303623843458013522930838119932485630, 374121581799746201009538413109130562019709006364670

There are at least 2 other sequences that have Mathcad entries (and look as if they were first created in Mathcad):

A081623 - OEIS

A125089 - OEIS

Stuart

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