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A166703
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Totally multiplicative sequence with a(p) = a(p-1) + 6 for prime p.
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0
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1, 7, 13, 49, 55, 91, 97, 343, 169, 385, 391, 637, 643, 679, 715, 2401, 2407, 1183, 1189, 2695, 1261, 2737, 2743, 4459, 3025, 4501, 2197, 4753, 4759, 5005, 5011, 16807, 5083, 16849, 5335, 8281, 8287, 8323, 8359, 18865, 18871, 8827, 8833, 19159, 9295, 19201
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OFFSET
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1,2
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LINKS
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FORMULA
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Multiplicative with a(p^e) = (a(p-1)+6)^e. If n = Product p(k)^e(k) then a(n) = Product (a(p(k)-1)+6)^e(k).
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PROG
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(PARI) a(n)={n=factor(n); n[, 1]=apply(p->a(p-1)+6, n[, 1]); factorback(n)} \\ - M. F. Hasler, Nov 03 2013
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CROSSREFS
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KEYWORD
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nonn,mult
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AUTHOR
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STATUS
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approved
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