A259990 This sequence and A259991 are base-14 analogs of A007185 and A016090, written in base 10.

7, 49, 2401, 2401, 386561, 5764801, 58471553, 374712065, 4802079233, 149429406721, 1595702681601, 42091354378241, 665724390506497, 10190301669556225, 99086356274020353, 1654767311852142593, 14722487338708369409, 228161914444026740737, 2789435039707847196673

Offset: 1

Author

N. J. A. Sloane, Jul 13 2015

Keywords

• nonn
• base

Comments

See Schut (1991) for precise definition.

Ignoring repetitions, the subsequence of A201919 of terms ending in 7 in base 14. - Eric M. Schmidt, Jul 18 2015

References

• C. P. Schut, Idempotents. Report AM-R9101, Centrum voor Wiskunde en Informatica, Amsterdam, 1991.

Links

• Eric M. Schmidt, Table of n, a(n) for n = 1..500

Crossrefs

Cf. A007185, A016090, A201919, A259986-A259991.

Programs

Sage

def a(n) : return crt(1, 0, 2^n, 7^n) # Eric M. Schmidt, Jul 18 2015

Extensions

More terms from Eric M. Schmidt, Jul 18 2015