A248423 Multiples of 4 with digits backwards.

0, 4, 8, 21, 61, 2, 42, 82, 23, 63, 4, 44, 84, 25, 65, 6, 46, 86, 27, 67, 8, 48, 88, 29, 69, 1, 401, 801, 211, 611, 21, 421, 821, 231, 631, 41, 441, 841, 251, 651, 61, 461, 861, 271, 671, 81, 481, 881, 291, 691, 2

Offset: 0

Author

Jacy Fang, Oct 06 2014

Keywords

• nonn
• base

Crossrefs

Cf. A004093 (multiples of 2 backwards), A008586 (multiples of 4).

Programs

PARI

a(n) = subst(Polrev(digits(4*n)), x, 10); \\ Michel Marcus, Oct 06 2014