A332464 Rule 124 one-dimensional cellular automaton applied for one step to the configuration read from the base-2 expansion of sigma(n), then converted back to decimal.

3, 7, 12, 11, 14, 28, 24, 19, 31, 54, 28, 44, 22, 56, 56, 35, 54, 107, 60, 126, 96, 108, 56, 76, 35, 126, 120, 88, 38, 216, 96, 67, 112, 126, 112, 255, 110, 76, 88, 254, 126, 224, 124, 252, 214, 216, 112, 140, 91, 239, 216, 230, 126, 152, 216, 152, 240, 254, 76, 504, 70, 224, 248, 131, 252, 432, 204, 134, 224, 432, 216

Offset

1,1

Links

Antti Karttunen, Table of n, a(n) for n = 1..8192

Antti Karttunen, Data supplement: n, a(n) computed for n = 1..65537

Index entries for sequences related to cellular automata

Index entries for sequences related to sigma(n)

Formula

a(n) = A269174(A000203(n)) = A269174(sigma(n)).

Prog

(PARI)
A269174(n) = bitand(bitor(n, n<<1), bitor(bitxor(n, n<<1), bitxor(n, n<<2)));
A332464(n) = A269174(sigma(n));

Crossrefs

Cf. A000203, A269174, A332465.

Cf. also A332224, A332209, A332452, A332453.

Sequence in context: A082600 A355314 A351103 * A256563 A349888 A243705

Adjacent sequences: A332461 A332462 A332463 * A332465 A332466 A332467

Keyword

nonn

Author

Antti Karttunen, Feb 16 2020

Status

approved