arrayGen: Generate array for slurm arra job
In ricardobatistad/sbm_theory: SBM inference

Relies on triage job to count from 0 onwards. Meant for R. If python, need to deal with fact that indices start at 0.

1	arrayGen(group_mode, n_inst, d_inst, member_param, samps, group, step, skip)

`group_mode`	standard or overlap
`n_inst`	single n
`d_inst`	single d
`member_param`	single p or s
`samps`	how many samples will we process
`group`	how many indices to process per task ID
`step`	step to get around slurm's 50k constraint
`skip`	how many graphs (presumably done) to skip