A053232 Numbers n for which values not equal to 2 occur in the expansion of A053230.

1, 2, 23, 31, 32, 38, 39, 54, 59, 67, 68, 74, 75, 84, 98, 99, 114, 128, 129, 138, 149, 157, 158, 172, 177, 197, 198, 201, 202, 228, 229, 232, 240, 241, 247, 248, 257, 262, 263, 277, 278, 281, 283, 284, 293, 307, 308, 311, 313, 314, 332, 333, 339, 340, 349, 350

Offset

1,2

Links

Table of n, a(n) for n=1..56.

Maple

with(numtheory): f := [seq( `if`((sigma(i+1) > sigma(i)), i, print( )), i=1..5000)];
seq( `if`(f[i+1] - f[i] <> 2, i, print( )), i=1..100);

Crossrefs

Cf. A000203, A053224, A053230, A053231, A053233, A053234, A053235, A053236, A053237.

Sequence in context: A045708 A090150 A106102 * A065987 A107153 A049544

Adjacent sequences: A053229 A053230 A053231 * A053233 A053234 A053235

Keyword

nonn

Author

Asher Auel, Jan 10 2000

Status

approved