2758676

Appears in sequences

• Number of (n+1)X(2+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.at n=16A232400
• Growth series for group with presentation < S, T : S^4 = T^4 = (S*T)^4 = 1 >.at n=17A298802