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A045526 n! has initial digit '7'. 18
6, 56, 80, 156, 161, 170, 186, 200, 230, 238, 277, 288, 305, 307, 323, 325, 327, 344, 385, 410, 451, 454, 472, 475, 504, 532, 547, 551, 575, 592, 601, 615, 645, 661, 697, 710, 724, 731, 790, 800, 811, 822, 848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..10000

Index entries for sequences related to factorial numbers

MATHEMATICA

Select[ Range[ 900 ], IntegerDigits[ #! ] [[1]] == 7 & ]

PROG

(PARI) isok(n) = digits(n!)[1] == 7; \\ Michel Marcus, Feb 08 2017

CROSSREFS

For factorials with initial digit d (1 <= d <= 9) see A045509, A045510, A045511, A045516, A045517, A045518, A282021, A045519; A045520, A045521, A045522, A045523, A045524, A045525, A045526, A045527, A045528, A045529. See also A000142.

Sequence in context: A183594 A140790 A137033 * A164579 A137034 A177059

Adjacent sequences:  A045523 A045524 A045525 * A045527 A045528 A045529

KEYWORD

nonn,base

AUTHOR

Jeff Burch

STATUS

approved

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Last modified October 16 08:24 EDT 2018. Contains 316259 sequences. (Running on oeis4.)