id:A045521 - OEIS Search Results

Search: id:A045521

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n! has initial digit '2'.

+0
1

2, 4, 16, 20, 23, 30, 32, 34, 39, 44, 47, 54, 58, 68, 75, 85, 86, 87, 113, 114, 115, 126, 135, 142, 148, 153, 159, 163, 168, 172, 180, 184, 188, 195, 205, 208, 211, 214, 217, 220, 223, 226, 234, 237, 242, 247, 252, 257, 262, 269, 276, 278, 287, 289, 302, 304 (list; graph; listen)

	OFFSET	`0,1`
	LINKS	`Index entries for sequences related to factorial numbers`
	MATHEMATICA	`Select[ Range[ 310 ], IntegerDigits[ #! ] [ [ 1 ] ] == 2 & ]`
	CROSSREFS	`Sequence in context: A131560 A067709 A102545 this_sequence A076434 A049441 A059622` `Adjacent sequences: A045518 A045519 A045520 this_sequence A045522 A045523 A045524`
	KEYWORD	`nonn,base`
	AUTHOR	`Jeff Burch (gburch(AT)erols.com)`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research