A356350 Primitive terms of A357769: terms of A357769 that are not ten times another term of A357769.

1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 18, 24, 36, 48, 102, 108, 110, 112, 114, 126, 132, 140, 150, 156, 190, 204, 210, 216, 220, 224, 228, 230, 252, 264, 270, 280, 306, 312, 330, 336, 396, 408, 420, 440, 448, 460, 510, 540, 550, 624, 630, 660, 690, 756, 770, 840, 880

Offset: 1

Author

Bernard Schott and Rémy Sigrist, Oct 15 2022

Keywords

• nonn
• base

Comments

This sequence is infinite as it contains A133384.

Each term of A357769 can be uniquely written as a(m)*10^z for some m > 0 and z >= 0.

Examples

			230 is a term as 230 belongs to A357769 and 23 does not belong to A357769.
756 is a term as 756 belongs to A357769 and is not divisible by 10.
		

Links

• Index entries for sequences related to decimal expansion of n

Crossrefs

Cf. A133384, A356349, A357769.

Programs

PARI

isA357769(n, base=10) = { my (d=digits(n, base), s=0); for (k=1, #d, if (n % (s+=d[k]), return (0)); ); return (1) }
is(n, base=10) = isA357769(n, base) && (n%base || !isA357769(n/base, base))