id:A015226 - OEIS Search Results

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Even hexagonal pyramidal numbers.

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22, 50, 252, 372, 946, 1222, 2360, 2856, 4750, 5530, 8372, 9500, 13482, 15022, 20336, 22352, 29190, 31746, 40300, 43460, 53922, 57750, 70312, 74872, 89726, 95082, 112420, 118636, 138650, 145790, 168672, 176800, 202742, 211922, 241116 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`Even numbers of form n(n+1)(4n-1)/6.`
	MATHEMATICA	`Select[ Table[ n(n+1)(4n-1)/6, {n, 100} ], EvenQ ]`
	CROSSREFS	`Sequence in context: A039345 A043168 A043948 this_sequence A092221 A111576 A101571` `Adjacent sequences: A015223 A015224 A015225 this_sequence A015227 A015228 A015229`
	KEYWORD	`nonn,easy`
	AUTHOR	`Mohammad K. Azarian (ma3(AT)evansville.edu)`
	EXTENSIONS	`More terms from Erich Friedman (erich.friedman(AT)stetson.edu).`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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