A050402 - OEIS

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A050402

Number of independent sets of nodes in C_4 X C_n (n > 2).

7, 1, 35, 121, 743, 3561, 18995, 96433, 500871, 2573905, 13292995, 68492073, 353290343, 1821383097, 9392360019, 48428332641, 249716406791, 1287608913057, 6639354593123, 34234612471001, 176524935990503 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	FORMULA	`a(n) = a(n-1) + 17a(n-2) + 23a(n-3) + a(n-4) - 9*a(n-5) - a(n-6) + a(n-7)`
	CROSSREFS	`Sequence in context: A002678 A147482 A171770 * A027643 A051931 A188728` `Adjacent sequences: A050399 A050400 A050401 * A050403 A050404 A050405`
	KEYWORD	`easy,nonn`
	AUTHOR	`Stephen G. Penrice (spenrice(AT)ets.org), Dec 21 1999`
	EXTENSIONS	`More terms from Michael Lugo (mlugo(AT)thelabelguy.com), Dec 22 1999`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.