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

Author

Antti Karttunen, Feb 16 2020

Keywords

• nonn

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)

Crossrefs

Cf. A000203, A269174, A332465.

Cf. also A332224, A332209, A332452, A332453.

Programs

PARI

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

Formula

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