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A045520 n! has initial digit '1'. 0
0, 1, 5, 15, 19, 22, 25, 27, 35, 37, 42, 45, 48, 51, 55, 59, 63, 64, 69, 70, 76, 77, 78, 88, 89, 90, 91, 92, 93, 94, 95, 104, 105, 106, 107, 108, 109, 110, 111, 112, 123, 124, 125, 132, 133, 134, 140, 141, 146, 147, 152, 157, 158, 162, 167, 171, 175, 176, 179, 183 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

Index entries for sequences related to factorial numbers

MATHEMATICA

Select[ Range[ 0, 200 ], IntegerDigits[ #! ][ [ 1 ] ] == 1 & ]

CROSSREFS

Sequence in context: A174598 A022417 A102180 * A032472 A045176 A027184

Adjacent sequences:  A045517 A045518 A045519 * A045521 A045522 A045523

KEYWORD

nonn,base

AUTHOR

Jeff Burch (gburch(AT)erols.com)

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Last modified February 15 19:15 EST 2012. Contains 205852 sequences.