136629

Appears in sequences

• T(2n+4,n), array T as in A055794.at n=16A055797
• Term at which first number of height n occurs in Recamán's sequence A005132.at n=25A064292
• Group the natural numbers >= 1 so that the n-th group contains n(n+1)/2 numbers and obtain the group sum.at n=16A095166
• Number of walks of length n between two nodes at distance 2 in the cycle graph C_9.at n=19A095367
• Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 3 X n array.at n=13A219596