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A304736 Restricted growth sequence transform of A048675(A064413(n)). 2
1, 2, 3, 4, 3, 5, 5, 4, 6, 5, 7, 6, 8, 9, 10, 6, 5, 7, 11, 12, 13, 7, 14, 9, 15, 10, 16, 17, 18, 7, 6, 19, 20, 21, 22, 23, 24, 25, 9, 14, 13, 26, 27, 28, 7, 8, 18, 14, 22, 12, 15, 9, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 14, 7, 21, 39, 40, 41, 10, 42, 25, 9, 43, 44, 45, 9, 15, 46, 35, 47, 48, 49, 8, 50, 51, 10, 28, 52, 53, 54, 14, 11, 55, 42, 56, 29, 57, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65539

Index entries for sequences related to EKG sequence

PROG

(PARI)

A048675(n) = { my(f = factor(n)); sum(k=1, #f~, f[k, 2]*2^primepi(f[k, 1]))/2; };

A304735(n) = A048675(A064413(n)); \\ Needs also code for A064413.

rgs_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), u=1); for(i=1, length(invec), if(mapisdefined(om, invec[i]), my(pp = mapget(om, invec[i])); outvec[i] = outvec[pp] , mapput(om, invec[i], i); outvec[i] = u; u++ )); outvec; };

v304736 = rgs_transform(vector(65539, n, A304735(n)));

A304736(n) = v304736[n];

CROSSREFS

Cf. A048675, A064413, A304735.

Cf. also A064301, A304113.

Sequence in context: A299757 A159630 A305747 * A286448 A325277 A257573

Adjacent sequences:  A304733 A304734 A304735 * A304737 A304738 A304739

KEYWORD

nonn

AUTHOR

Antti Karttunen, May 18 2018

STATUS

approved

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Last modified October 17 11:58 EDT 2019. Contains 328110 sequences. (Running on oeis4.)