A376690 First differences of A055932.

1, 2, 2, 2, 4, 4, 2, 6, 6, 2, 4, 12, 6, 6, 4, 8, 18, 6, 12, 12, 8, 16, 6, 12, 18, 12, 18, 6, 24, 16, 14, 18, 12, 24, 36, 24, 36, 12, 18, 30, 6, 26, 28, 36, 24, 30, 18, 72, 30, 18, 42, 30, 24, 36, 60, 12, 52, 26, 30, 72, 48, 60, 36, 54, 90, 18, 12, 30, 36, 84, 60

Offset

1,2

Comments

First difference of numbers k with a primorial kernel, i.e., rad(k) = P(i), where rad = A007947 and primorial P = A002110.

Links

Michael De Vlieger, Table of n, a(n) for n = 1..10000

Michael De Vlieger, Log log scatterplot of a(n), n = 1..74468.

Michael De Vlieger, Efficient Mathematica constructor program for A055932

Mathematica

(* Load function f in the linked constructor a-file *)
Differences@ Union@ Flatten@ f[8]

Crossrefs

Cf. A002110, A007947, A055932, A178799.

Sequence in context: A117728 A172309 A130453 * A259981 A070705 A216326

Adjacent sequences: A376687 A376688 A376689 * A376691 A376692 A376693

Keyword

nonn,easy

Author

Michael De Vlieger, Oct 13 2024

Status

approved