id:A074865 - OEIS Search Results

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a(n) = a(n-1) + R[a(n-2)] + R[a(n-3)] + R[a(n-4)] where a(0) = a(1) = a(2) = a(3) = 1 and R(n) (A004086) is the reverse of n.

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1, 1, 1, 1, 4, 7, 13, 25, 67, 157, 316, 1195, 2635, 9910, 21796, 33268, 108541, 264685, 566431, 1384927, 2251855, 10267813, 23278831, 68031385, 119376340, 223452859, 339327088, 1399568407, 3282220573, 12169858759, 23849465446, 130434244321 (list; graph; listen)

	OFFSET	`1,5`
	CROSSREFS	`Cf. A000288.` `Sequence in context: A118334 A004119 A074864 this_sequence A072683 A122552 A074862` `Adjacent sequences: A074862 A074863 A074864 this_sequence A074866 A074867 A074868`
	KEYWORD	`easy,base,nonn`
	AUTHOR	`Felice Russo (felice.russo(AT)katamail.com), Sep 11 2002`
	EXTENSIONS	`Corrected and extended by Michel ten Voorde (seqfan(AT)tenvoorde.org) Jun 13 2003` `More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 08 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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