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A284063 Numbers whose smallest decimal digit is 2. 7
2, 22, 23, 24, 25, 26, 27, 28, 29, 32, 42, 52, 62, 72, 82, 92, 222, 223, 224, 225, 226, 227, 228, 229, 232, 233, 234, 235, 236, 237, 238, 239, 242, 243, 244, 245, 246, 247, 248, 249, 252, 253, 254, 255, 256, 257, 258, 259, 262, 263, 264, 265, 266, 267, 268 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Numbers n such that A054054(n) = 2.

Prime terms are in A106102.

LINKS

Table of n, a(n) for n=1..55.

MATHEMATICA

Select[Range[300], Min[IntegerDigits[#]] == 2 &] (* Alonso del Arte, Mar 19 2017 *)

PROG

(MAGMA) [n: n in [1..100000] | Minimum(Setseq(Set(Sort(&cat[Intseq(n)])))) eq 2]

(PARI) isok(n) = vecmin(digits(n)) == 2; \\ Michel Marcus, Mar 25 2017

(Python)

def ok(n): return '2' == min(str(n))

print([m for m in range(269) if ok(m)]) # Michael S. Branicky, Feb 22 2021

CROSSREFS

Cf. Sequences of numbers whose smallest decimal digit is k (for k = 0..9): A011540 (k = 0), A284062 (k = 1), this sequence (k = 2), A284064 (k = 3), A284065 (k = 4), A284066 (k = 5), A284067 (k = 6), A284068 (k = 7), A284069 (k = 8), A002283 (k = 9).

Sequence in context: A141236 A079032 A325485 * A153826 A080283 A228112

Adjacent sequences:  A284060 A284061 A284062 * A284064 A284065 A284066

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Mar 19 2017

STATUS

approved

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Last modified August 9 15:01 EDT 2022. Contains 356026 sequences. (Running on oeis4.)