A363456 Positions of the terms of the Chernoff sequence (A006939) in A025487.

1, 2, 6, 27, 150, 900, 5697, 37226, 246280, 1648592, 11204274

Offset

0,2

Comments

Indices of records in A363455.

Links

Table of n, a(n) for n=0..10.

Formula

A025487(a(n)) = A006939(n).

A363455(a(n)) = n.

Example

A006939(0) = A025487(1) = 1, so a(0) = 1.
A006939(1) = A025487(2) = 2, so a(1) = 2.
A006939(2) = A025487(6) = 12, so a(2) = 6.

Mathematica

lps = Cases[Import["https://oeis.org/A025487/b025487.txt", "Table"], {_, _}][[;; , 2]];
cher = Table[Product[Prime[k]^(n - k + 1), {k, 1, n}], {n, 0, 8}]
Position[lps, #] & /@ cher // Flatten

Crossrefs

Cf. A006939, A025487, A363455.

Similar sequences: A098718, A098719, A293635, A306802, A346043, A346407.

Sequence in context: A030858 A030932 A340356 * A118192 A338180 A307595

Adjacent sequences: A363453 A363454 A363455 * A363457 A363458 A363459

Keyword

nonn,more

Author

Amiram Eldar, Jun 03 2023

Status

approved